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Table 1 Luminous efficacies of white LEDs using PiGs containing various concentrations of diffuser layers

From: Phosphor-in-glasses composites containing light diffusers for high color uniformity of white-light-emitting diodes

ZrO2 concentration (wt. %) 0 5 10 15 20
Luminous efficacy (lm/W) 90.3 86.0 83.4 82.7 78.6